[mirror_ubuntu-artful-kernel.git] / lib / bust_spinlocks.c

/*
 * lib/bust_spinlocks.c
 *
 * Provides a minimal bust_spinlocks for architectures which don't have one of their own.
 *
 * bust_spinlocks() clears any spinlocks which would prevent oops, die(), BUG()
 * and panic() information from reaching the user.
 */

#include <linux/kernel.h>
#include <linux/printk.h>
#include <linux/spinlock.h>
#include <linux/tty.h>
#include <linux/wait.h>
#include <linux/vt_kern.h>
#include <linux/console.h>


void __attribute__((weak)) bust_spinlocks(int yes)
{
	if (yes) {
		++oops_in_progress;
	} else {
#ifdef CONFIG_VT
		unblank_screen();
#endif
		console_unblank();
		if (--oops_in_progress == 0)
			wake_up_klogd();
	}
}
Commit	Line	Data
	1	/*
	2	* lib/bust_spinlocks.c
	3	*
	4	* Provides a minimal bust_spinlocks for architectures which don't have one of their own.
	5	*
	6	* bust_spinlocks() clears any spinlocks which would prevent oops, die(), BUG()
	7	* and panic() information from reaching the user.
	8	*/
	9
	10	#include <linux/kernel.h>
	11	#include <linux/printk.h>
	12	#include <linux/spinlock.h>
	13	#include <linux/tty.h>
	14	#include <linux/wait.h>
	15	#include <linux/vt_kern.h>
	16	#include <linux/console.h>
	17
	18
	19	void __attribute__((weak)) bust_spinlocks(int yes)
	20	{
	21	if (yes) {
	22	++oops_in_progress;
	23	} else {
	24	#ifdef CONFIG_VT
	25	unblank_screen();
	26	#endif
	27	console_unblank();
	28	if (--oops_in_progress == 0)
	29	wake_up_klogd();
	30	}
	31	}